Oh man! This isn't a reading challenge, it's a DARE! The dare is to read only books that you already have for the next 3 months. Exceptions can be made for ARCs, book clubs, etc.
I will also make an exception for the 3 new-release books that I've pre-ordered and one that I have on hold at the library. I did a similar challenge in 2013 and I was DESPERATE to get books from the library by the end. It's a serious challenge to go 3 months without getting any new books -
but I can do it!